/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * This file may have been modified by Bytedance Inc.
 */

package com.bytedance.primus.common.state;


/**
 * Hook for Transition. This lead to state machine to move to 
 * the post state as registered in the state machine.
 */
public interface SingleArcTransition<OPERAND, EVENT> {
  /**
   * Transition hook.
   * 
   * @param operand the entity attached to the FSM, whose internal 
   *                state may change.
   * @param event causal event
   */
  public void transition(OPERAND operand, EVENT event);

}
